Comfort of Glasses
The most important thing when shopping for glasses is comfort. When you choose, you must try it on to see if you feel any discomfort. Whether the glasses can be well put on the upper part of the bridge of the nose, and whether they are light enough and will not cause any burden on the opposite side. In addition, you must see if there is any feeling of dizziness.
Polygonal glasses frame is derived from square glasses frame. Some of the frames belong to mechanical cutting, and the lens has an exquisite diamond design, very popular with consumers. The irregular frame makes the glasses more angular and makes the frames less monotonous. It's more stylish and trendy. Gold is more popular, but the price is not high.
Parameters of lens material selection
Since the refractive index of the lens material varies for the light of different wavelengths, and white light is made up of various colors of light of different wavelengths, the dispersion phenomenon occurs when the lens refracts white light. The dispersion coefficient is an important index to identify the sharpness of lens imaging, which is usually indicated by Abbe number (Abbe number = dispersion coefficient). The larger the Abbe number, the smaller the dispersion, and vice versa, the smaller the Abbe number, the larger the dispersion, and the worse the resolution of the image.
Humans have been using glass lenses for about 300 years, and it was not until 1947 that the first resin lenses made of CR39 were produced. A big reason for using resin lenses is their safety, i.e. impact resistance. Only lenses that pass the Drop Ball Test are considered safe. Combining the above two parameters, we can compare different lenses.
Recommended Glasses for Heart Shaped Face
Wayfarers frames: to balance out a wider forehead is by finding frames that have wide, prominent endpoints that extend out past your temples. This can draw the gaze up and away from your cheekbones, making your eyes the focal point. So, the wayfarers frames are recommended.
Cat-eye frames: if you do not know how to choose the best glasses for heart shaped faces, you can try the cat-eye frames glasses. They can be quite versatile and help contour your face, either balancing or highlighting prominent features.
Aviator frames: the last glasses for heart shaped face we want to recommend is the aviator glasses. They can work to draw the eye downwards and flatten the bottom part of your face. The aviator frame glasses can also add a balanced look and soften prominent angular features.
Eyeglass frames aren't just about sight, they're a fashion statement. In the Visionworks collection of designer glasses, there are top brands to choose from, including Nike, Ray-Ban, and Guess. By using the filter, you can browse the frames by category, gender, brand, price, color, lens type, and more, making it easy to buy glasses online. While the lenses sharpen your vision and bring the world into focus, the frames are a statement of your personality and style. If you want to buy glasses online, they offer a good price option.
How to handle rusty spectacle frame?
Skin allergies are after the rust of the spectacle frame, so we have to solve the problem of rust of the spectacle frame by physical isolation. Apply a layer of transparent nail polish on the metal surface, or add an anti-allergic sleeve on the temple of the eyeglasses so as to separate the skin from the metal by resin. Both of these methods isolate the skin from the spectacle frame, effectively preventing corrosion of the spectacle frame caused by sweat and grease.
How many degrees of myopia do I need to wear glasses?
Students are the most nearsighted because they need to read and study every day. Many people have myopia during their student days. During the physical examination, everyone will check their eyesight first. Generally speaking, if the visual acuity is lower than 0.6, it means that you may be near-sighted to 0 degrees. At this time, you need to go for optometry to see the specific vision situation and see if you need to wear glasses. If the visual acuity tested exceeds 200 degrees, you must wear glasses at this time. If you do not wear glasses, your vision will be greatly affected, and the degree of myopia will rise quickly. For this reason, you must wear glasses in time to correct your vision. If the degree of myopia does not exceed 0 degrees, this is pseudo-myopia and does not require glasses. However, you should always take care to protect your eyes, avoid staring at things at close range for a long time, and don't let your eyes get too tired, so your vision will slowly return to normal.